AceShowbiz - Jennifer Garner's affectionate relationship with her ex-husband Ben Affleck has sparked concerns among friends. The actress, they argue, should ensure her close bond with Affleck doesn't jeopardize her relationship with John Miller, her boyfriend of seven years.

Photos from a March paintball outing in Castaic, California, showing Affleck closely embracing Garner, have fueled speculation about their relationship. Although sources close to the pair insist that their connection is purely platonic, she was urged to be more mindful to avoid further drama.

According to Ok! Magazine, some of her pals believe she isn't setting enough boundaries with Affleck, especially given his vulnerability. "Some friends feel there should be more boundaries, especially with Ben so vulnerable," says a source.

The former married couple have managed to maintain a close bond, co-parenting their three children since their 2015 divorce. Affleck's recent split from Jennifer Lopez has brought him and Garner closer. They've spent family vacations together, celebrated birthdays, and even weathered the Los Angeles wildfires in each other's company.

Despite their visible closeness, a source asserts, "While some fans hope they'll rekindle their relationship, it's not going to happen. Jen will always ride to Ben's rescue, but it stops there."

While Miller stays out of the drama, he's aware of Garner's involvements and reportedly trusts her. An insider shared, "Obviously some people think John should be worried - most men wouldn't be thrilled to see their girlfriend in an intimate embrace with her ex - but he is confident in the fact that Jen can be there for the father of her children and also remain faithful. She's truly in love with him."

Despite this, friends warn that Garner's role in Affleck's life could cause tension, "Some friends believe Jen should step back from Ben a bit because it might cause tension in her relationship with John if she doesn't."

Affleck's ongoing personal struggles concern those close to him, including Garner. She's been actively supportive, helping him navigate his issues, but some of her friends feel it's not her responsibility.

As one source emphasized, "John wants nothing more than for Ben to be okay, but it isn't his girlfriend's responsibility to play babysitter to him. That is for Ben to figure out on his own and for his wife to handle."

As their respective personal and public lives continue to intertwine, it remains to be seen how these relationships will evolve.